 
- O -
Each entry is arranged in the following manner:
Last name/First Name
Date of Record/Place of Origin/Delaware County Where Record was Filed
Record Group and Series Number/Source
Oaselley
F. W.
1876
England
Kent
1217.79
Vol. 2, page 67, 1866-1903
Petition and Record for Naturalization
Oates
Louis Arthur
1905
England
Kent
1217.66
Vol. 1, page 158
Declarations of Intention (First Papers)
Obbate
John
1927
Italy
Kent
1217.66
Vol. 4, page 41, #241
Naturalizations - Petitions
O'Bertsch
Charles
1900
Germany
New Castle
1217.31
Vol. 5, page 170
Final Papers - 2nd Papers
O'Brian
Matthew
1834
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Brian
Owen
1823
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Brien
Christopher
1834
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Brien
John
1848-1850
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Brien
Mathew
1834
Ireland
Kent
1217.83
Vol. 1, page 54
Naturalization Book
O'Brien
Patrick
1894
Ireland
New Castle
1217.34
Vol. 3, page 198
Declaration of Intent - 1st Papers
O'Callahan
Michael P.
1891
Ireland
New Castle
1217.34
Vol. 2, page 173
Declaration of Intent - 1st Papers
O'Cane
Michael
1849
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Connell
Daniel
1890
Ireland
New Castle
1217.34
Vol. 2, page 77
Declaration of Intent - 1st Papers
O'Connell
Daniel
1890-1893
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Connell
David
1893
Ireland
New Castle
1217.31
Vol. 3, page 318
Final Papers - 2nd Papers
O'Connell
Jeremiah
1894
Ireland
New Castle
1217.34
Vol. 3, page 160
Declaration of Intent - 1st Papers
O'Connell
John
1874
Ireland
New Castle
1217.34
Vol. 01, page 167
Declaration of Intent - 1st Papers
O'Connell
John
1882
Ireland
New Castle
1217.34
Vol. 1, page 200
Declaration of Intent - 1st Papers
O'Connell
John
1893
Ireland
New Castle
1217.34
Vol. 3, page 104
Declaration of Intent - 1st Papers
O'Connell
John
1898
Ireland
New Castle
1217.31
Vol. 4, page 505
Final Papers - 2nd Papers
O'Connell
John
1894
Ireland
New Castle
1217.34
Vol. 3, page 131
Declaration of Intent - 1st Papers
O'Connell
John
1893-1898
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Connell
Patrick
1892
Ireland
New Castle
1217.34
Vol. 3, page 71
Declaration of Intent - 1st Papers
O'Connell
Thomas
1894
Ireland
New Castle
1217.31
Vol. 3, page 349
Final Papers - 2nd Papers
O'Connell
Thomas
1891-1894
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Conner
Alexander J.
1856
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Conner
John
1858
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Connor
Cornelius
1854
Ireland
Kent
1217.83
Vol. 1, page 242
Naturalization Book
O'Connor
David
1892
Ireland
New Castle
1217.34
Vol. 3, page 26
Declaration of Intent - 1st Papers
O'Connor
Dennis
1894
Ireland
New Castle
1217.34
Vol. 3, page 183
Declaration of Intent - 1st Papers
O'Connor
James R.
1894
Ireland
New Castle
1217.31
Vol. 4, page 125
Final Papers - 2nd Papers
O'Connor
James R.
1894
Ireland
New Castle
1217.34
Vol. 3, page 133
Declaration of Intent - 1st Papers
O'Connor
James R.
1894
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Connor
John
1889-1892
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Connor
Thomas
1891
Ireland
New Castle
1217.34
Vol. 2, page 180
Declaration of Intent - 1st Papers
O'Conor
John
1892
Ireland
New Castle
1217.31
Vol. 3, page 278
Final Papers - 2nd Papers
O'Covell
Francis
1878
Canada
Kent
1217.66
Vol. 1, page 50
Declarations of Intention (First Papers)
Ocrhskr
Martin D.
1885
Germany
Kent
1217.66
Vol. 1, page 90
Declarations of Intention (First Papers)
O'Daniel
John
1859
Ireland
New Castle
1217.34
Vol. 01, page 30
Declaration of Intent - 1st Papers
O'Daniel
John
1862
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Donald
James
1897
Ireland
New Castle
1217.34
Vol. 5, page 5
Declaration of Intent - 1st Papers
O'Donald
James
1897-1900
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Donell
Patrick
1904
Ireland
New Castle
1217.34
Vol. 5, page 184
Declaration of Intent - 1st Papers
O'Donell
Thomas H.
1892
Ireland
New Castle
1217.34
Vol. 3, page 38
Declaration of Intent - 1st Papers
O'Donnell
Charles
1852
Ireland
Kent
1217.83
Vol. 1, page 236
Naturalization Book
O'Donnell
Charles
1904
Ireland
New Castle
1217.34
Vol. 5, page 181
Declaration of Intent - 1st Papers
O'Donnell
Charles
1850
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Donnell
Daniel
1906
Ireland
New Castle
1217.34
Vol. 6, page 66
Declaration of Intent - 1st Papers
O'Donnell
Dominick
1894
Ireland
New Castle
1217.31
Vol. 4, page 126
Final Papers - 2nd Papers
O'Donnell
Dominick
1840-1843
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Donnell
Hugh
1890
Ireland
New Castle
1217.34
Vol. 2, page 61
Declaration of Intent - 1st Papers
O'Donnell
James
1900
Ireland
New Castle
1217.31
Vol. 5, page 136
Final Papers - 2nd Papers
O'Donnell
James
1842-1844
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Donnell
Thomas H.
1894
Ireland
New Castle
1217.31
Vol. 4, page 60
Final Papers - 2nd Papers
O'Donnell
Thomas H.
1892-1894
Ireland
New Castle
1217.35
Naturalizations - Petitions
Oechsler
Martin
1888
Germany
Kent
1217.52
Superior Court - Naturalizations
Oechster
Martin D.
1888
Germany
Kent
1217.79
Vol. 2, page 113, 1866-1903
Petition and Record for Naturalization
Oesterreicher
Emanuel
1890-1894
Austria
New Castle
1217.35
Naturalizations - Petitions
Oesterreicher
Emmanuel
1894
Austria
New Castle
1217.31
Vol. 4, page 173
Final Papers - 2nd Papers
Ogelvels
Frank
1894
Austria
New Castle
1217.31
Vol. 4, page 82
Final Papers - 2nd Papers
Ogelvets
Frank
1891
Austria
New Castle
1217.34
Vol. 2, page 178
Declaration of Intent - 1st Papers
Ogelvets
Frank
1891-1894
Australia
New Castle
1217.35
Naturalizations - Petitions
Ognibene
Salvatore
1920
Italy
Kent
1217.79
Vol. 2, page 35, 1917-1926
Petition and Record for Naturalization
O'Gorman
William
1848
Ireland
Kent
1217.52
Superior Court - Naturalizations
Ogram
James
1842
England
New Castle
1217.35
Naturalizations - Petitions
Ogram
James
1842
England
New Castle
1217.31
Vol. 2, page 94
Final Papers - 2nd Papers
O'Hana
John
1850
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Hana
John
1850
Ireland
Kent
1217.83
Vol. 1, page 204
Naturalization Book
O'Hauley
Angus
1904
Scotland
New Castle
1217.34
Vol. 5, page 180
Declaration of Intent - 1st Papers
O'Herlihy
Thomas
1888
Ireland
New Castle
1217.34
Vol. 1, page 300
Declaration of Intent - 1st Papers
Ohern
John
1852
Ireland
New Castle
1217.35
Naturalizations - Petitions
Ohlson
Andrew
1882
Sweden
New Castle
1217.34
Vol. 1, page 213
Declaration of Intent - 1st Papers
O'Kain
John
1847
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Keeffe
Patrick
1891
Ireland
Kent
1217.66
Vol. 1, page 106
Declarations of Intention (First Papers)
O'Keeffe
Patrick
1894
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Keeffee
Patrick
1894
Ireland
Kent
1217.79
Vol. 2, page 160, 1866-1903
Petition and Record for Naturalization
Oleivinski
Joseph
1889-1892
Germany
New Castle
1217.35
Naturalizations - Petitions
Olewinski
Joseph
1892
Germany
New Castle
1217.31
Vol. 3, page 271
Final Papers - 2nd Papers
Olewinski
Joseph
1889
Germany
New Castle
1217.34
Vol. 2, page 8
Declaration of Intent - 1st Papers
Olivastri
Torello
1899
Italy
New Castle
1217.34
Vol. 5, page 35
Declaration of Intent - 1st Papers
Oliver
Frederick J.
1903
England
New Castle
1217.34
Vol. 5, page 112
Declaration of Intent - 1st Papers
Oliver
Frederick J.
1903-1906
England
New Castle
1217.35
Naturalizations - Petitions
Oliver
Frederick J.
1906
England
New Castle
1217.31
Vol. 6, page 282
Final Papers - 2nd Papers
Oliver
Stewart
1896
Ireland
New Castle
1217.31
Vol. 4, page 410
Final Papers - 2nd Papers
Oliver
Stewart
1896
Ireland
New Castle
1217.35
Naturalizations - Petitions
Oliveri
Luigi
1896
Italy
New Castle
1217.31
Vol. 4, page 433
Final Papers - 2nd Papers
Olivieri
Luigi
1894-1896
Italy
New Castle
1217.35
Naturalizations - Petitions
Olsen
Hans
1919
Not stated on form
Sussex
1217.168
page 2, #729882
Certificate of Naturalization Stubs
Olsen
Haus
1917
Norway
Sussex
1217.100
page 41, #41
Declaration of Intention
Olsen
Hous
1919
Norway
Sussex
1217.169
Vol. 2, page 33
Petition and Record for Naturalization
Olsen
Olof
1892
Norway
New Castle
1217.34
Vol. 2, page 185 1/2
Declaration of Intent - 1st Papers
Olson
Erick
1896
Sweden
New Castle
1217.34
Vol. 4, page 63
Declaration of Intent - 1st Papers
Olson
John
1904
Sweden
New Castle
1217.31
Vol. 6, page 89
Final Papers - 2nd Papers
Olson
Per Otto
1896
Sweden
New Castle
1217.31
Vol. 4, page 350
Final Papers - 2nd Papers
Olson
Per Otto
1893-1896
Sweden
New Castle
1217.35
Naturalizations - Petitions
Olsson
John
1898-1904
Sweden
New Castle
1217.35
Naturalizations - Petitions
Olszewski
Anton
1892
Germany
New Castle
1217.34
Vol. 2, page 200
Declaration of Intent - 1st Papers
Olszewski
Bernard
1891-1895
Sweden
New Castle
1217.35
Naturalizations - Petitions
Olszewski
Bernard
1895
Germany
New Castle
1217.31
Vol. 4, page 211
Final Papers - 2nd Papers
Olszewski
John
1906
Russia
New Castle
1217.34
Vol. 6, page 99
Declaration of Intent - 1st Papers
Olszewski
John
1904
Russia
New Castle
1217.31
Vol. 6, page 28
Final Papers - 2nd Papers
Olszewski
John
1904
Russia
New Castle
1217.35
Naturalizations - Petitions
Olszewski
John
1906
Germany
New Castle
1217.34
Vol. 6, page 104
Declaration of Intent - 1st Papers
O'Mulliin
Daniel
1858
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Mullin
Daniel, Jr.
1858
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Mullin
Patrick
1858
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Mullin
Patrick
1848
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neal
Francis
1851-1754
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neal
Patrick
1862
Ireland
New Castle
1217.34
Vol. 01, page 72
Declaration of Intent - 1st Papers
O'Neal
Thomas
1874
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neal
Thomas
1874
Ireland
New Castle
1217.31
Vol. 3, page 159
Final Papers - 2nd Papers
O'Neal
Thomas
1871
Ireland
New Castle
1217.34
Vol. 01, page 141
Declaration of Intent - 1st Papers
O'Neil
Edward
1851-1854
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neil
Felix
1803
Ireland
Kent
1217.83
Vol. 1, page 16
Naturalization Book
O'Neil
Felix
1803
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Neil
Patrick
1864
Ireland
Kent
1217.79
Vol. 1, page 174, 1858-1866
Petition and Record for Naturalization
O'Neil
Patrick
1864
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Neil
Peter
1860
Ireland
Kent
1217.79
Vol. 1, page 113, 1858-1866
Petition and Record for Naturalization
O'Neil
Peter
1860
Ireland
Kent
1217.52
Superior Court - Naturalizations
O'Neill
Felix
1856
Ireland
New Castle
1217.31
Vol. 3, page 43
Final Papers - 2nd Papers
O'Neill
Felix
1854-1856
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neill
Francis
1851--1853
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neill
Francis
1874
Ireland
New Castle
1217.34
Vol. 01, page 147
Declaration of Intent - 1st Papers
O'Neill
Francis
1868
Ireland
New Castle
1217.31
Vol. 3, page 172
Final Papers - 2nd Papers
O'Neill
Francis
1851
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Neill
James
1898
Ireland
New Castle
1217.34
Vol. 5, page 21
Declaration of Intent - 1st Papers
O'Neill
John
1876
Ireland
New Castle
1217.34
Vol. 01, page 172
Declaration of Intent - 1st Papers
O'Neill
John
1886
Ireland
New Castle
1217.34
Vol. 1, page 251
Declaration of Intent - 1st Papers
O'Neill
Michael
1904
Ireland
New Castle
1217.31
Vol. 6, page 155
Final Papers - 2nd Papers
O'Neill
William
1868
Ireland
New Castle
1217.31
Vol. 3, page 173
Final Papers - 2nd Papers
O'Neill
William
1874
Ireland
New Castle
1217.34
Vol. 01, page 158
Declaration of Intent - 1st Papers
O'Neill
William
1878
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Niel
Peter
1858
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Niell
Francis
1878
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Niell
John
1869
Ireland
New Castle
1217.31
Vol. 3, page 174
Final Papers - 2nd Papers
Opalach
Jozef
1906
Russia
New Castle
1217.34
Vol. 6, page 109
Declaration of Intent - 1st Papers
Orchard
John H.
1877
England
Kent
1217.66
Vol. 1, page 43
Declarations of Intention (First Papers)
O'Reilly
James J.
1900
Ireland
New Castle
1217.31
Vol. 5, page 144
Final Papers - 2nd Papers
O'Reilly
James J.
1900
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Reilly
Laurence
1896
Sweden
New Castle
1217.35
Naturalizations - Petitions
O'Reilly
Lawrence
1896
Ireland
New Castle
1217.31
Vol. 4, page 245
Final Papers - 2nd Papers
O'Reilly
Lawrence
1896
Ireland
New Castle
1217.31
Vol. 4, page 373
Final Papers - 2nd Papers
O'Rielly
Thomas
1898
Ireland
New Castle
1217.31
Vol. 5, page 20
Final Papers - 2nd Papers
O'Rielly
Thomas
1898
Sweden
New Castle
1217.35
Naturalizations - Petitions
O'Riely
Charles
1798
Ireland
New Castle
1217.35
Naturalizations - Petitions
Orisini
Rocco
1905
Italy
New Castle
1217.34
Vol. 6, page 32
Declaration of Intent - 1st Papers
Orkin
Harry
1914
Russia
Kent
1217.66
Vol. 2, page 81, #81
Naturalizations - Petitions
Orkin
Harry
1917
Russia
Kent
1217.79
Vol. 2, page 11, 1917-1926
Petition and Record for Naturalization
Orkin
Isaac
1917
Russia
Kent
1217.79
Vol. 2, page 10, 1917-1926
Petition and Record for Naturalization
Orkin
Isaac
1914
Russia
Kent
1217.66
Vol. 2, page 80, #80
Naturalizations - Petitions
Orlando
Pautrum
1897
Italy
New Castle
1217.34
Vol. 4, page 176
Declaration of Intent - 1st Papers
Orlinger
Jacob
1890
Germany
New Castle
1217.34
Vol. 2, page 165
Declaration of Intent - 1st Papers
Oros
John
1922
Hungary
Kent
1217.79
Vol. 2, page 48, 1917-1926
Petition and Record for Naturalization
Oros
John
1919
Hungary
Kent
1217.66
Vol. 3, page 34, #134
Naturalizations - Petitions
Orosz
Michael
1891
Austria
New Castle
1217.34
Vol. 2, page 177
Declaration of Intent - 1st Papers
O'Rourke
Bartholomew
1852
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
James
1852
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
Peter
1829
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
Timothy
1852
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
Timothy
1854
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
Timothy
1856
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Rourke
Timothy
1856
Ireland
New Castle
1217.31
Vol. 3, page 1
Final Papers - 2nd Papers
Orshechowsky
Joseph
1895-1900
Russia
New Castle
1217.35
Naturalizations - Petitions
Orsheckowski
John
1900
Russia
New Castle
1217.31
Vol. 5, page 121
Final Papers - 2nd Papers
Orth
Peter
1900
Germany
New Castle
1217.31
Vol. 5, page 243
Final Papers - 2nd Papers
Orth
Peter
1894-1900
Germany
New Castle
1217.35
Naturalizations - Petitions
Orzeolioski
Frank
1896
Prussia
New Castle
1217.31
Vol. 4, page 364
Final Papers - 2nd Papers
Orzeshoski
Frank
1896
Russia
New Castle
1217.35
Naturalizations - Petitions
Orzeskowski ?
John
1888
Germany
New Castle
1217.34
Vol. 1, page 325
Declaration of Intent - 1st Papers
Orzybrowski
Joseph
1892
Germany
New Castle
1217.31
Vol. 3, page 277
Final Papers - 2nd Papers
Osak
Karol
1905
Austria
New Castle
1217.31
Vol. 6, page 271
Final Papers - 2nd Papers
Osak
Karol
1903
Austria
New Castle
1217.34
Vol. 5, page 107
Declaration of Intent - 1st Papers
Osak
Karol
1903-1905
Austria
New Castle
1217.35
Naturalizations - Petitions
Osawski
John
1889
Germany
New Castle
1217.34
Vol. 2, page 5
Declaration of Intent - 1st Papers
Oshowsky
Michael
1896
Russia
New Castle
1217.31
Vol. 4, page 359
Final Papers - 2nd Papers
Osienski
Frank
1900
Russia
New Castle
1217.35
Naturalizations - Petitions
Osienski
Frank
1900
Russia
New Castle
1217.31
Vol. 5, page 218
Final Papers - 2nd Papers
Osinauski
Anton
1892
Germany
New Castle
1217.31
Vol. 3, page 256
Final Papers - 2nd Papers
Oskin
Jacob
1890
Russia
New Castle
1217.34
Vol. 2, page 129
Declaration of Intent - 1st Papers
Osmanski
Antoni
1892
Germany
New Castle
1217.35
Naturalizations - Petitions
Osowski
John
1896
Germany
New Castle
1217.31
Vol. 4, page 448
Final Papers - 2nd Papers
Osowski
John
1892
Germany
New Castle
1217.31
Vol. 3, page 245
Final Papers - 2nd Papers
Osowski
John
1889-1892
Germany
New Castle
1217.35
Naturalizations - Petitions
Osowski
John
1896
Prussia
New Castle
1217.35
Naturalizations - Petitions
Osowski
Teofiel
1888
Germany
New Castle
1217.34
Vol. 1, page 334
Declaration of Intent - 1st Papers
Ostend
Jacob P.
1896
Sweden
New Castle
1217.31
Vol. 4, page 405
Final Papers - 2nd Papers
Ostensen
Andrew
1895
Norway
New Castle
1217.34
Vol. 4, page 31
Declaration of Intent - 1st Papers
Ostrend
Jacob P.
1893-1896
Sweden
New Castle
1217.35
Naturalizations - Petitions
Ostro
Jacob
1902
Russia
New Castle
1217.35
Naturalizations - Petitions
Ostro
Jacob
1902
Russia
New Castle
1217.31
Vol. 5, page 305
Final Papers - 2nd Papers
Ostrolski
Stanislaw
1906
Russia
New Castle
1217.34
Vol. 6, page 77
Declaration of Intent - 1st Papers
Ostronsky
Michael
1892
Russia
New Castle
1217.34
Vol. 3, page 67
Declaration of Intent - 1st Papers
Ostrowsky
Michael
1892-1899
Russia
New Castle
1217.35
Naturalizations - Petitions
O'Sullivan
Thomas
1858
Ireland
Kent
1217.52
Superior Court - Naturalizations
Oswald
Jacob
1900
Switzerland
New Castle
1217.31
Vol. 5, page 118
Final Papers - 2nd Papers
Oswald
Jacob
1900
Switzerland
New Castle
1217.35
Naturalizations - Petitions
O'Toole
John J.
1893
Ireland
New Castle
1217.31
Vol. 3, page 337
Final Papers - 2nd Papers
O'Toole
John J.
1888-1893
Ireland
New Castle
1217.35
Naturalizations - Petitions
O'Toole
Peter
1893
Ireland
New Castle
1217.34
Vol. 3, page 115
Declaration of Intent - 1st Papers
Ottmann
Leonard
1856
Germany
New Castle
1217.35
Naturalizations - Petitions
Ouseley
Frderick W.
1876
England
Kent
1217.52
Superior Court - Naturalizations
Ozechowski
Adam
1900
Russia
New Castle
1217.31
Vol. 5, page 117
Final Papers - 2nd Papers
Ozechowski
Adam
1900
Russia
New Castle
1217.35
Naturalizations - Petitions
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